1) And after a long and perilous journey, ZX Spectrum +2 becomes ZX Spectrum +2A, whereupon a lot of stuff stops working.
2) 3elitist5me. (These are sorta an obvious choice really).
3) It's funky and the last rank is Bugaboo. What else can you ask for? Idk who is mister Microbot though. Berk is I think from the Trap Door series? (... What, no Fred?)

Aaand so 3 it is I'd say. Or custom titles indeed, but that sounds a bit 1998 in a way when everyone wanted to be that spesshul pink unicorn.

The most valuable part of a rank is to implicitly or explicitly define a sorting/order/sequence.

To be useful, the sequence must be implicitly obvious for everyone, so that anyone can compare two ranks and know which is higher and which is lower.
Having too many ranks/levels can work against the "obvious" part.

Having said the above, I believe that:.

1) Is more or less common knowledge on this community.

2) might not be obvious, on all steps, for everyone

3) sequence/order is not obvious and could even be considered controversial